OPERATION OPTIMIZATION AND ECONOMIC EFFICIENCY DIAGNOSIS ON COLD END SYSTEM OF 300 MW UNIT IN SHAJIAO A POWER PLANT

XU Fangyou1; HU Guangming1; LIU Guangyao2; YAN Junjie2 1.Yuedian Shajiao A Power Plant

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OPERATION OPTIMIZATION AND ECONOMIC EFFICIENCY DIAGNOSIS ON COLD END SYSTEM OF 300 MW UNIT IN SHAJIAO A POWER PLANT

更新时间：2025-09-28

- OPERATION OPTIMIZATION AND ECONOMIC EFFICIENCY DIAGNOSIS ON COLD END SYSTEM OF 300 MW UNIT IN SHAJIAO A POWER PLANT
- Thermal Power Generation Vol. 39, Issue 7, Pages: 7-10(2010)
- 作者机构：
  
  1. 粤电沙角A电厂
  2. 西安交通大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK264.11
- Published：2010
- 稿件说明：
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XU Fangyou1, HU Guangming1, LIU Guangyao2, et al. OPERATION OPTIMIZATION AND ECONOMIC EFFICIENCY DIAGNOSIS ON COLD END SYSTEM OF 300 MW UNIT IN SHAJIAO A POWER PLANT[J]. Thermal power generation, 2010, 39(7): 7-10.
DOI：

XU Fangyou1, HU Guangming1, LIU Guangyao2, et al. OPERATION OPTIMIZATION AND ECONOMIC EFFICIENCY DIAGNOSIS ON COLD END SYSTEM OF 300 MW UNIT IN SHAJIAO A POWER PLANT[J]. Thermal power generation, 2010, 39(7): 7-10. DOI：

摘要

火力发电机组冷端系统的工作性能直接影响到整个机组的热经济性和安全性。针对沙角A电厂4号机组冷端系统

研究得出了不同负荷和循环水温度下循环水泵的最优运行方式。通过变工况计算

得出了机组不同运行工况下凝汽器运行端差、循环水温升和排汽温度的运行标准值。对该机组冷端系统的经济性诊断表明

机组凝汽器冬、春季端差偏高是由于真空泵连接管路有蒸汽凝结使阻力增加所致

因此应加强监测

及时排水

从而提高机组的运行经济性。

Abstract

The performance of cold end system for thermal power unit directly affects the thermal economic efficiency and safety of the whole unit.Directing against the cold end system of unit no.4 in Shajiao A Power Plant

the optimal operation mode of circulating water pumps under different loads and different temperature of circulating water has been studied and obtained.Through caculation under variation of operating conditions

the terminal temperature difference of condenser

the temperature rise of circulating water

and standard value of exhausted steam temperature under different operating conditions of unit have found.The economic efficiency diagnosis at cold end system of said unit shows that the terminal temperature difference of condenser for this unit in winter and spring season was somewhat higher

this is due to steam condensation in pipeline connecting to the vacuum pump

there fore

the monitoring should be strengthened

and the condensate thereof has to be timely discharged

so as to enhance th economic efficiency in operation of unit.

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ON-LINE OPTIMIZED OPERATION OF THE CIRCULATING WATER PUMP FOR 300 MW UNIT

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Auxiliary equipment adaptability for capacity enlargement of a 300MW unit

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